技術標籤：力扣pythonleetcode

python反轉字串

class Solution:
    def reverseString(self, s: List[str]) -> None:
        """
        Do not return anything, modify s in-place instead.
        """
        l=0
        r=len(s)-1
        while l<r:
            s[l],s[r]=s[r],s[
 
l]
            l+=1
            r-=1

python反轉字串III

class Solution(object):
    def reverseWords(self, s):
        return " ".join(s.split(" ")[::-1])[::-1]